Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 67 users online :: 3 registered, 0 hidden and 64 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

Registered users: Bing [Bot], Google [Bot], Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

triple barrel thoughts?

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
Sponsored 
  • Author
    Message

Unread postAuthor: boilingleadbath » Sun Apr 20, 2008 10:27 am

The effect of an early exit has been exaggerated in this thread.

In reality, it doesn't matter, because the reduced-pressure-'wave' does not have time (only traveling at the speed of sound) to reach the projectile in the other tubes before they exit too.

I've covered this before in more detail.
  • 0

User avatar
boilingleadbath
Moderator
Moderator
 
Posts: 1642
Joined: Sat Mar 12, 2005 10:35 pm
Location: Pennsylvania, USA
Reputation: 0

Unread postAuthor: biggsauce » Sun Apr 20, 2008 11:10 pm

I remember DR made a triple barrel cannon that shot arrows. It was pretty neat, it used 3 sprinkler valves with one main pilot valve. The other valves were piloted in series by the first sprinkler valve. I don't remember seeing his post in the archives, but it would provide some inspiration.

Or you could carry on and continue with a single valve design, as it would be a tight fit with those three barrels and fittings on each one when they are in the pipe like that.

btw, what happened to DR?
  • 0

User avatar
biggsauce
Captain
Captain
 
Posts: 338
Joined: Thu Jun 07, 2007 9:42 pm
Reputation: 0

Unread postAuthor: Jacksa26 » Tue Apr 22, 2008 5:24 am

Thanks for your thoughts everyone, they are much appreciated.
Last night i went through with my plan and built the barrel (or should i say barrels?) and i am very happy with the end result!

Once i inserted the 15mm pipes and was happy with their position I filled the gaps with an expanding sealant then some epoxy putty on top to give it a hardened paintable exterior.

I only had one shot with it before i painted it tonight (still waiting for it to dry :x ) and it went really well- the marbles i shot at the target which was about 25 meters away hit together within a 30cm area.

Here are some pics. Enjoy!
  • 0

Attachments
DSC00139.JPG
DSC00138.JPG
DSC00137.JPG
The Wheel of Time turns, and Ages come and pass, leaving memories that become legend.
User avatar
Jacksa26
Private
Private
 
Posts: 17
Joined: Thu Feb 21, 2008 4:38 am
Location: australia
Reputation: 0

Unread postAuthor: Ragnarok » Tue Apr 22, 2008 5:33 am

Nicely done! It looks pretty professional (and even a bit like a mini-gun, albeit one with only three barrels).
  • 0

Does that thing kinda look like a big cat to you?
User avatar
Ragnarok
Chief of Staff
Chief of Staff
 
Posts: 5339
Joined: Tue Dec 19, 2006 8:23 am
Location: The UK
Reputation: 8

Unread postAuthor: Blitz » Tue Apr 22, 2008 9:20 am

Ragnarok wrote:Nicely done! It looks pretty professional (and even a bit like a mini-gun, albeit one with only three barrels).
That's exactly what I was thinking. Although, some of the AH-1 Cobras have a 3-barreled 20mm gating gun.

Looks great so far!
  • 0

User avatar
Blitz
Colonel
Colonel
 
Posts: 621
Joined: Sat Apr 07, 2007 1:48 am
Location: West Chicago, IL
Reputation: 0

Unread postAuthor: psycix » Tue Apr 22, 2008 9:50 am

Awesome!
The looks of it are very very impressive :D
Reminds me of the gattling gun on the warthog of the game Halo, that one also has 3 barrels.
  • 0

Till the day I'm dieing, I'll keep them spuddies flying, 'cause I can!

Spudfiles steam group, join!
User avatar
psycix
Donating Member
Donating Member
 
Posts: 3684
Joined: Mon Jun 25, 2007 7:12 am
Location: The Netherlands
Reputation: 0

Unread postAuthor: biggsauce » Tue Apr 22, 2008 1:24 pm

Hahaha that looks awesome! No problem with any fittings then?
  • 0

User avatar
biggsauce
Captain
Captain
 
Posts: 338
Joined: Thu Jun 07, 2007 9:42 pm
Reputation: 0

Sponsored

Sponsor
 


Previous

Return to Pneumatic Cannon Discussion

Who is online

Registered users: Bing [Bot], Google [Bot], Yahoo [Bot]

Reputation System ©'